Skip to main content
SpringerLink
Log in

Flexural Behavior of Composite Concrete–Epoxy–Reinforced Concrete Beams

  • Research Paper
  • Published:
Iranian Journal of Science and Technology, Transactions of Civil Engineering Aims and scope Submit manuscript

Abstract

This paper deals with the structural performance of composite reinforced concrete beams made of two different concretes, bonded together using epoxy resin. The fabricated beam section consists of low-strength reinforced concrete core and relatively large thickness outer skin concrete jacket without reinforcement. The results confirm that the bonding technique used for constructing the composite section is effective. Flexural strength of the tested beam is mainly governed by the outer jacket thickness followed by the compressive strength of concrete. A simple flexural analytical model was developed to calculate moment capacity of composite sections. The predictions were found accurate and can be utilized for the flexural analysis and design of composite reinforced concrete beams. A parametric study was made to investigate the effects of core reinforcement and both composite section geometry and material properties on the depth of compression zone and moment capacity of the section.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15
Fig. 16

Similar content being viewed by others

Abbreviations

a :

Shear span

A s :

Area of steel rebar

b :

Beam width

c :

Depth of compression zone

d :

Effective depth

fco′:

Compressive strength of core

fc′:

Compressive strength of outer skin

f tu :

Tensile strength of concrete

f sp :

Splitting tensile strength

f y :

Yield stress of steel rebar

h :

Height of core

h t :

Height of composite section

M u :

Ultimate moment

P u :

Ultimate load

R tt :

Ratio of thickness of outer skin at tension to composite section’s height

R tc :

Ratio of thickness of outer skin at compression to composite section’s height

R ts :

Ratio of thickness of outer skin at sides to composite section’s width

t :

Thickness of outer skin

t f :

Thickness of flange

t w :

Thickness of web

α, β, γ, ψ :

Coefficients

Φ b :

Bond reduction factor

References

  • ACI Committee 318 (2015) Building code requirements for structural concrete. American Concrete Institute. Farmington Hills, First Printing

  • Alaee FJ, Karihaloo B (2003) Retrofitting of reinforced concrete beams with CARDIFRC. ASCE J Comp Consr 7(3):174–186

    Article  Google Scholar 

  • ASTM C204 (2013) Standard test method for fineness of hydraulic cement by air-permeability apparatus, Annual Book of ASTM Standard, vol 04

  • BS EN 12390-1 (2000) Testing hardened concrete—part 1 shape, dimensions and other requirements for specimens and moulds

  • Chalioris CE, Pourzitidis CN (2012) Rehabilitation of shear-damaged reinforced concrete beams using self-compacting concrete jacketing. Int Scho Res Net Civil Engg, ID 816107

  • Chalioris CE, Pourzitidis CN (2012b) Self-compacting concrete jacketing—tests and analysis. AASRI Procedia 3:624–629

    Article  Google Scholar 

  • El-Sayed TA, Erfan AM (2018) Improving shear strength of beams using ferrocement composite. Constr and Buil Mat 172:608–617

    Article  Google Scholar 

  • Eurocode 2 (2004) Design of concrete structures—part 1: general rules and rules for buildings. CEN, Brussels

  • Fahmy EH, Shaheen YBI, Abdelnaby AM, Abou Zeid MN (2014) Applying the ferrocement concept in construction of concrete beams incorporating reinforced mortar permanent forms. Int J Concr Struct Mater 8(1):83–97

    Article  Google Scholar 

  • Foti D (2014) Prestressed slab beams subjected to high temperatures. Compos Part B 58:242–250

    Article  Google Scholar 

  • Foti D, Vacca S (2013) Mechanical behavior of concrete columns reinforced with rheoplastic mortar. Materiales de Construcción 63:267–282

    Article  Google Scholar 

  • Habel K (2004) Structural behavior of elements combining ultra-high performance fiber reinforced concrete (UHPFRC) and reinforced concrete, Ph.D. thesis, Ecole Polytechnique Federal De Lausanne, Switzerland

  • Habel K, Denarie E, Bruhwiler E (2007) Experimental investigation of composite ultra high performance fiber reinforced concrete and conventional concrete members. ACI Str J 104(1):93–101

    Google Scholar 

  • Hassan HF (2015) Behavior of hybrid deep beams containing ultra high performance and conventional concretes. J Eng Technol 33(1 Part A):30–50

    Google Scholar 

  • Kaushik SK, Daubey AK (1994) Performance evaluation of RC ferrocement composite beams, ferrocement. In: Proceedings of the 5th international symposium, pp 240–256

  • Kaushik SK, Garg VK (1994) Rehabilitation of RC beams using precast ferrocement bonded plates, ferrocement. In: Proceedings of the 5th international symposium, pp 258–267

  • Meddah MS, Bencheikh M (2009) Properties of concrete reinforced with different kinds of industrial waste fibre materials. Constr Build Mater 23:3196–3205

    Article  Google Scholar 

  • Mohammadi Y, Singh SP, Kaushik SK (2008) Properties of steel fibrous concrete containing mixed fibres in fresh and hardened state. Constr and Buil Mat 22:956–965

    Article  Google Scholar 

  • Mohammed AA, Assi DK, Abdulrahman AS (2015) Tests on tensile and compressive strengths of high strength concrete containing silica fume. In: Proceedings of SELTH 2015—International Scientific Conference of the Romanian-German University of Sibiu (2015), pp 301–308

  • Raj J, Jeenu G (2010) Flexural behavior of UHPC-RC composite beams. In: Proceedings of the international conference on technological trends (ICTT-2010)

  • Sarsam KF, Mohammed MH (2004) Flexural strength of hybrid beams containing reactive powder concrete and conventional concrete. J Eng Develop 18(5):61–91

    Google Scholar 

  • Shaheen YBI, Safan MA, Abdalla MA (2012) Structural behavior of composite reinforced ferrocement plates. Concr Res Lett 3(3):477–490

    Google Scholar 

  • Shanour AS, Said M, Arafa AI, Maher A (2018) Flexural performance of concrete beams containing engineered cementitious composites. Constr Build Mater 180:23–34

    Article  Google Scholar 

  • Silva ER, Coelho JFJ, Bordado JC (2013) Strength improvement of mortar composites reinforced with newly hybrid-blended fibers: influence of fibers geometry and morphology. Constr Build Mater 40:473–480

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Civil Engineering, College of Engineering, University of Sulaimani, Sulaimani, Iraq

    Azad A. Mohammed

  2. Faculty of Engineering, Koya University, Koya, Iraq

    Taghreed K. Mohammed Ali

Authors
  1. Azad A. Mohammed
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Taghreed K. Mohammed Ali
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Azad A. Mohammed.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Mohammed, A.A., Ali, T.K.M. Flexural Behavior of Composite Concrete–Epoxy–Reinforced Concrete Beams. Iran J Sci Technol Trans Civ Eng 44, 549–563 (2020). https://doi.org/10.1007/s40996-019-00255-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s40996-019-00255-1

Keywords

Search

Navigation